<template>
  <li
    @mouseover="flag = true"
    @mouseleave="flag = false"
    :style="{ background: flag ? 'rgba(117, 124, 117, 0.348)' : 'none' }"
  >
    <label>
      <input type="checkbox" :checked="done" @change="singleChange(id)" />
      <span>{{ thing }}</span>
    </label>
    <button
      class="btn btn-danger"
      @click="singleDelete(id)"
      :style="{ display: flag ? 'block' : 'none' }"
    >
      删除
    </button>
  </li>
</template>

<script>
export default {
  props: ['id', 'thing', 'done', 'singleChange', 'singleDelete'],
  data() {
    return {
      flag: false,
    }
  },
}
</script>

<style>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
</style>
